SU749666A2 - Concrete mix preparing unit - Google Patents

Description

This invention relates to the industrial use of construction materials. According to the main author. St. No. 337267 is a well-known concrete mix preparation plant that contains consumable bunkers, concrete mixers, metering devices, feeders and a continuous jet mixer, and a gas flame enhancer Til. Is mounted between the charge aggregate bin and the metering unit of the latter. The disadvantage of this device is that it does not provide high-quality mixing of the mixture. The purpose of the invention is to increase the mix quality. This is achieved by the fact that the installation for preparing a concrete mixture, containing consumable bunkers of the constituent concrete mixture, metering devices, and feeders, is a continuous-jet jet mixer, whereby a gas-flame concentrator is simulated between the supply bin and the metering unit of the latter. it is equipped with an enrichment device for the mechanical cleaning of rubble with a closed crushing plant and its separation into fractions, connected by a conveyor with feed bins, and a paddle mixer, installed after the jet mixer and sequentially connected to it. FIG. 1 shows the installation, the general view of FIG. 2 -. View A-A in FIG. one; in fig. 3 - unit for mechanical cleaning of rubble and sand. The plant for the manufacture of concrete mixes contains a receiving hopper 1, storage bins 2, 3 and 4 for cement, sand and rubble, automatic dispensers for continuous operation 5-8 for the dosage of cement, sand and two fractions of crushed stone, jet mixers for continuous action 9 and 1O, blade mixer 11, reverse1SH.ny screw -12, gas-flame installation consisting of a preliminary sand chamber 13 of sand, two chambers - gas 14 burning, temperature treatment chamber 15 sand, HiwecKoro cenapaixDpa 16 and a chain elevator 17. In addition, the installation contains bunker issuing IS concrete; a preparation and supply unit with xiifs additives, consisting of two mixers 19 pumps 20 and a storage tank 21. The unit is equipped with an advanced mechanical cleaning device for crushed stone with a closed cycle and splitting it into fractions with an oTcerai 22 -25, screens 26 and 27, the crusher 28, the bushr sand 29 and the conveyors 30-42 and the bunker 43. The device operates as follows, Sand from the discharge devices, by. the conveyor 34 through the unloading trolley. KU is delivered to the compartments 24 of the automatizdrovashyuh warehouse intershlhh, and then through automatic 2-blade blades of the kosheramn 30 and 31 are transported to the six-roar screen 26, sifted sand to the bunker 29 through the feeder and conveyor 33 and S, by conveyor 34 vygrugkaets to warehouse B compartments 25. Waste from sifting of sand l kUgs along estrus by a conveyor to the bootser, and then to the motor transport. The incoming non-fractional crushed stone from the unloading devices along the conveyor 34, the unloading H-earth filter is fed into the compartment 22, and then through the closures and conveyors 36 and 37. pushes for enrichment on screen 27, Enriched crushed stone of fraction 5-15 from the hopper via conveyors 33, .33, and 34 and the unloading t & cnc is fed to 23 .. Crushed stone of fractions over 15 mm is enriched in a closed loop; vibrating screen 27 of co-tailors 38 and 39 and cone crusher 28, Stone dust is removed through bunker 43. Sand from the compartments 25 of the warehouse through automatic 2-blade paddles along conveyors 40 and 41 and conveyor 42 enters the bunker with automatic shutters 1, and then with a chute with a drum feeder is loaded into the chamber of the preliminary substage 13. Sand dehydration is carried out from hot gases coming from a gas-flame plant Dehydrated sand U) To the help of drum feeders pos. It enters the temperature treatment chamber. ki 15 of a gas-flame installation, where u is DROPPING out its drying and enriching on opposite gas flows at a temperature of 550®, while the sand burns praHH4ecKHe, ffpffiviecH, from the impact, the surface of the sand grains becomes sheer, gg-like particles. turn into dust. Ogdeleshse sand from dust occurs in a conical separator 16 due to the closure of Yunn X tangential flows. The sand enriched with chain elevator 17 is overloaded into accumulative sand, and the clay-dust particles (due to discharge) generated by the smoke exhauster are removed into the cyclone and are transported through the bunker by motor transport. , Crushed stone frakshsh 5-15 and 15-40 mm from the warehouse transports the conveyor Am, and 40, 41 .. and 42 are poured into the storage bins 4, Cement from the warehouse by transport transports s cumulative bunker 2 When the sand mixtures are made, cement and sand are dosed with continuous dispensers steps 5 and 6 and through the reversible cheeks 12, the components are sent to the jet mixers 9 or 10. A mixture of water with chemical additives,. prepared at an automated installation 19, through the tank 21 by a pump doser is fed into the jet mixers under pressure. In the manufacture of fine-grained concrete mixes or a mixture with large aggregate, the cement-sand mixture prepared by the jet mixer 10 is fed to the 2nd stage of transfer to the paddle mixer 11, to which it simultaneously feeds. with through the batcher 8 crushed stone. Inkjet mixers 9 10 operate on compressed air. The actuated air from the bins is removed by a fan. Concrete mixes are shipped through hoppers 18 to motor vehicles or through a conveyor belt to a molding workshop. The formula of the invention. The plant for preparing a concrete mixture according to the author's certificate fe 337267, characterized in that, in order to increase the quality of the mixture, it is equipped with a processing plant for the mechanical cleaning of crushed stone with a closed crushing cycle, United Trans.

57496666

with a hopper with consumables, and information sources,

with a paddle mixer, installed in the examination

after the jet mixer and after-1. Author's copyright USSR

connected to HIIM.

No. 337267, cl. B 28 C 5 / O6, 197O.

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Claims (1)

Claim Installation for the preparation of concrete mix according to copyright certificate No. 337267, characterized in that, in order to improve the quality of the mixture, it is equipped with an enrichment device for mechanical cleaning of crushed stone with a closed crushing cycle and its separation into fractions connected by gran. a sporter with feed hoppers, and a paddle mixer installed after the jet mixer and connected in series with it. 749 666 ₆